Improvement in apparatus for cooling lard



A. M. WARTHMAN, 1r. Apparatus for Cooling Lard.A

NOJSLQM.

Patented June 9,1874.

UNT' STATES PATENT OFFICE.

ANTHONY M. VARTHMAII, JR., OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO A. H. WARTHMAN, CHARLES H. VVAR'IHMAN, AND ANTHONY M. WARIH- MAN, JR., OF SAME PLACE.

IMPROVEMENT IN APPARATUSFOR 'COOLING LARD.

Specification forming part of Letters Patent No. 151,941, dated June 9, 1874 application tiled February 21, 1874.

, ceed to describe.

To the joists a of a building are suspended ways or rails b, for receiving the anged wheels d on axles xed to the frame B, so that the latter can be reciprocated on the rail by a crank, E, and pitman F, as shown in Fig. l. Four guiding-han gers, e, project downward from the frame B, and to vertical grooves in these hangers are adapted the corner posts f of the frame A, consisting of the said posts f and a number of intermediate posts, f', all properly secured together and stayed by diagonal ties m. From each post on one side of the frame A to the corresponding post on the opposite side of the said frame extend a number of slats, n, two posts and their slats forming a dasher, M. In the present instance there are five of these dashers; but they may be more or less in number, according to the size of the trough D. From each end of the frameA extends a rope or chain, h, over a pulley, t', on a hanger secured to the frame B, the two ropes being connected to a cross-shaft, p, adapted to bearin gs in the said frame B, so that, by turning this shaft, the frame A may be raised or lowered at pleasure. rI he exterior trough D may be made of wood; but the inner trough D should be made of thin metal, by preference sheet-zinc or galvanized sheet-iron, the said inner trough resting on slats in the bottom of the outer trough, as shown in Fig. 2. Gold water is permitted to circulate freely between the two troughs, and, when circumstances permit, it is preferable for the drainage of an ice-house to be admitted to the space between the troughs; or ice-water can be used.

When the apparatus has to be put in operation, the frame A is lowered until projections on the top of the corner posts catch against projections at the lower ends of the hangers e, as shown in the drawing, when the frame B is entirely supported by the said hangers, and the lower edges of the dashers are as nea-r as possible to the bottom ol' the inner trough without being in absolute contact therewith. The hot rendered lard is now deposited in the metal trough, and the crank E is caused to revolve, thereby imparting a reciprocating motion to the frame B, as well as to the frame A and its dashers. The shaft to which the crank E is attached should be provided with such appliances, or should be so drivenfrom another shaft, that its speed may be increased or diminished at pleasure. When the lard is rst introduced into the trough, and is in a very fluid condition owing to its heat, the reciprocating motion of the dashers should be comparatively slow, so as to prevent lard from escaping from the trough under the agitation caused by the dashers. As the lard commences to become thick and this danger ceases,

the speed of the reciprocating dashers may be increased, and when the lard becomes properly cooled, and of the desired consistency, the frame A, with its dashers, may be elevated clear of the trough, so that the lard may be removed therefrom preparatory tobeing packed for transportation and storage.

I have found that by thus agitatin g the lard in a metal vessel around which water can circulate freely, not only is the cooling operation facilitated, but the lard is superior, as regards clearness, to that which has been cooled in the ordinary manner.

I do not claim, broadly, a lard-cooling apparatus in which the dashers are adjustable, as they have heretofore been hinged to the frames so as to be separately turned up out of the lard; but

I claim- 1. The combination, in a lard-cooling appa- 

